Leakdown Results
12-02-2008, 12:07 AM
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Leakdown Results So I had a compression and leakdown test on a new 440 LS7.
They're all 12-14% except one with 19%.
The rings are plasma moly Hellfire rings for nitrous possibly later.
Results are after 500 miles.
Does this sound ok to you?
They're all 12-14% except one with 19%.
The rings are plasma moly Hellfire rings for nitrous possibly later.
Results are after 500 miles.
Does this sound ok to you?
12-02-2008, 01:13 AM
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Engine hot or cold? Forged pistons i assume? ring gaps? these would be helpful, doesn't sound bad though still probably has a little breaking in to do
Last edited by 1994Z28Lt1; 12-02-2008 at 02:01 AM.
12-02-2008, 07:47 AM
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Leakdown Results No. I recently did a leak-down test on my 427 and all cylinders (except one) were under 5% leakage on a cold engine. This engine has over 100 passes on it. To me, anything over 10% is not good.
